Google is wading deeper into the growing pool of online shopping competitors, testing out its ability to provide customers with same-day delivery.

This week the company launched a small pilot program in the Bay Area called Google Shopping Express. The service allows online shoppers to order from name-brand stores like Target and Toys R Us and have those goods delivered the same day.

The service, for now, is free to consumers. Google will make money by taking a commission from the retailer.

Anyone can sign up to join a waiting list to try out Shopping Express. A Google spokesperson says the company will begin its testing with a small number of people, saying: "We hope this will ... help us kick the tires on the new service."

While Google is perhaps the biggest heavyweight on the Internet, ramping up its shopping service will put it squarely in competition with longtime retailer Amazon.com. The Seattle e-tailing giant has been experimenting with various models for same-day delivery, making the service available on select products and beginning to build regional delivery centers in a number of states.

For its part, Google continues to search for ways to make money. Though the company boasts an impressive book of products - from Android, the world's most used mobile operating system, to mail service Gmail, to self-driving cars, to upcoming wearable computers like Google Glass - roughly 95 percent of the company's revenue is dependent on advertising dollars from its search engine.

In November, Google acquired BufferBox, a service for delivering e-commerce goods to kiosks. Amazon and Walmart stores have rolled out similar programs with "lockers" for delivering goods, so that people don't have to wait at home for a package.

So far the major retailers participating in Google Shopping Express are Target, Walgreens, Staples, American Eagle, Office Depot and Toys R Us.

And, in case you don't want to wait in line, you can order Blue Bottle Coffee for same-day delivery too.